The first one and the fourth one
Answer: The Core has a solid inner core and a liquid outer core.
Explanation: The relative melting points of the layers each increase the deeper you go into Earth's mass.
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Answer:
Ecosystems are in a constant dance as their components compete, react, evolve, migrate, and form new communities. Geological upheaval, evolution, climatic cycles, fires, storms, and population dynamics see to it that Nature is always changing.
Explanation:
It has a strong influence on the ecosystem
The answer is water table. Water table is the boundary
between vandose zone and the zone of saturation. The unsaturated is the vandose
while the saturated is the groundwater zone. Water table is located in the top
of an unconfined aquifer, that can tell the level below which soil and rock are
saturated with water and the top of the zone that is saturation.
